Paper-making apparatus



, machine.

Patented Sept 27, 1927.

UNITED s'rxrlazsv PATENT. OFFICE.

RAL'PII E. HEISEL, OF CHILLICOTHE, OHIO, ASSIGNOR TO THE MEAD PULP &PAPER COMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO.

PAPER-MAKING APPARATUS.

Application filed November 12, 1925. Serial No. 68,581.

This invention relates to paper-making machinery, and more particularlyto that portion of paper-making machinery which has to do with thevfeeding of the paperinaking stock upon the forming part of the One ofthe principal objects of theinvention is to' provide an inlet which 1sconstructed for easy adjustment to give suitable vcontrol of the flow ofthe stock from the iiow box to the forming Wire.

Another object is to .provide as a unitary structure a block member orclosure adapted to be engaged in the opening of the inlet to control thewidth thereof. j

Other'objects of the invention will be apparent from the following'description when taken in connection with the accompanying drawing, inwhich: I

Fig. 1 is a fragmentary elevational view of an inlet incorporating thepresent invention;

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1; and 1 Fig.3 is a section taken onthe line 3-3 of Fig. 2.

Referring to drawing, the reference characters and 21 designaterespectively the flow-directing apron and the top plate of'an inlet ofthe type shown in the co-pending application of Ralph E. Heisel, SerialNo. 15,017, filed March 12, 1925. The Howdirecting apron and top plate,as shown, form parts of an inlet of the well-known Voith type, the topplate 21 being movably connected to the front of the flowbox, in thewell-known manner. One end member of the flow box is indicated by thenumeral 23 adjusting bolts 43 described below. As is well understood inthe art, theseparts are connected with a fiow box containing pulp orother fibrous material suspended in Water, and constitute the orilicethrough which the pulp or paper-forming stock flows onto the formingwire 16 passing underneaththe front edge of the dow-directing apron,which edge is shown at the lleft of Fig. 2.

As is usual in inlet constructions of this character the top plate 21 ismovably connected, or hinged, so as to swing up or down to adjust theei'ective height of the opening or orifice between the apron 20 and thefront edge of the plate 21. Any suitable means may be provided foradjusting the top plate and carries a lug 24C which receives the 21,such for example as the adjusting rods vMeans should be provided forclosing the opening between the apron 2O and top plate 21, at the endsto prevent escape of the paper-forming stock except through theeffective opening at the front edge of the plate 21, and this means ispreferably made adjustable as at times it is desirable to vary the widthof the inlet, and for this purpose I have provided a unitary blockmember or closure which ma be received and held between theflow-directing apron 2O and the top-plate 21 of the inlet. This blockmember is so arranged and constructed that it maybe adjusted to vary thewidth of the inlet opening without necessitating disassembhng orrearrangement of the parts of the inlet or affecting adjustment thereof.

The block member or closure consists of top and bottom plates 25 and 26which are adapted to lie against the opposed faces of the inlettop-plate 21 and the flow-directing apron 20 respectively, as best shownin Fig. 2. The top-plate 25 is provided at its forward edge with anupturned iange 27 adapted to engage the front edge of the inlettop-plate 21 to restrain any tendency for`the top-plate 25 to sliderearwardly from the mouth of the inlet. The bottom plate is providedwith a back pla-te 31 extending upwardly from the rear edge of thebottom plate 26 and formed or rigidly secured thereon, and is alsoprovided at one end with a side plate 32 extending upwardly therefromand preferably having its lupper edge inclined at an angle approximatingthe general angle of setting of the top plate 21 during operation. Theback plate 31 and the side plate 32 are held spaced from the top plate25 so as to permit movement of tlie top plate toward or from the bottomplate and the back and end walls thereof as the member 21 is moved tovary the eHective opening of vthe inlet. The top plate 25 is connected,to 100 and iexible material 33 constitute .105

n closure may be then slid along theinlet to l vstock flows onto theformingv wire. The

.Various clamping-strips or plates 35, 36 and 37, connected to theplates in any suitable manner.

The block or closure may be positioned in the inlet by inserting itbetween the flowdirecting apron'20 and the top plate 2lat the one'end ofthe inlet, the top plate 25 having first been compressed toward thebottom plate 26 to permit entry of the block within the space available.The block or vary the Width of the inlet opening .as desired. In orderthat the upper and lower plates 25 and 26 may be moved apart and intocontact with the upper and lower members of the inlet, springs 40 havingtheir ends positioned over restraining bosses 41, are provided whichareunder such tension as to urge the members 25 and 26 apart during alladjustments of the inlet. And the .construction and arrangement oftheparts, and the compression of the springs 40 is suicient to frictionallyhold the block in adjusted position within the inlet. However, in somecases it may be desirable to rigidly secure the block in position, andfor this purpose I have. provided thebaok plate 31 with a slot 42 whichis adapted to receive a bolt 43 by which the block may be rigidlyclamped against the edge of the flow box.

An important advantage of the present invention resides in the fact thatthis block may be quickly and easily placed in position, and that it maybe readily adjusted to inlets of various heights, variation in heightbeing taken up by the compression springs 40 and the iexible Wallmaterial 33. Although the block has been illustrated in association withbut one. end of the inlet, it is obvious that through a suitablereversal of parts it may also be applied to the other end of the inlet,or that'it might even be placed at points intermediate the ends of theinlet so aswto subdivide the inlet into a plurality of orifices eachowing paper stock upon the forming wire to form a plurality of sheets ofpaper from a single inlet.

While the form of apparatus herein described constitutes a preterredembodiment of the invention, it is to be understood that the inventionis not limited to this precise form of apparatus, and that changes maybe made therein without departing from the scope ofthe invention whichis defined in the appended claims.

IVhat is claimed is:

l. In an inlet for paper-making machinery comprising a flow-directingapron and a plate controlling the effective height of the inlet opening,means for varying the member adapted to be received between said apronand plate and to close off a portion of said inlet opening, saidexpansible member being adjustable along the length of y said apron andsaid plate ,to vary the Width of said outlet opening.

3. In an inlet for paper-making machini ery comprising. a flow-directingapron and a plate controlling the height of the inlet opening, means forvarying the vwidth of said inlet opening, said means, comprisin a blockmember adapted to be frictionally held between said` apron and saidplate to limit the width of said inlet.

4. In an inlet for paper-making machinery comprising a flow-directingapron and a plate controlling the height of the inlet opening, means forvarying the Width of said inlet opening, said means comprising awedge-shaped block adapted to be received between said apron and saidplate.

5. In an inlet for paper-making machin.- ery comprising a flow-directingapron and a plate controlling the height of they inlet opening, meansfor closing oit a portion of said inlet opening comprising a back wallfor bridging the space between the apron and the top plate of the inletto intercept the flow of paper stock, and yielding means adapted toengage the inlet to retain said back Wall in position.

6. In an inlet for paper-making machinery comprising a flow-directingapron and a plate controlling the height of the inlet opening, means forclosing olf a portion of said inlet opening comprising a back wall forbridging the space between the apron and the top plate of the inlet tointercept the ow of paper stock, and means engaged between. the oppositefaces of the apron and the top plate to hold said back wall in position.

7. In an inlet for paper-making machinery comprising a flow-directingapron and a platecontrolling the height of the inlet opening, means forclosing olf a portion of said inlet opening comprising a back Wallforbridging the space between the apron and the top plate of the inlet tointercept the flow of paper stock, and means engaged between theopposite faces of the apron and the top plate to hold said back wall inposition, said last mentioned means com rising I a bottom member rigidlyconnecte with the back plate and a .top member flexibly connectedtherewith.

8. Inan inlet for paper-making machinone of said first mentioned plates,andilexery comprising a. flow-directing apron and a ible means for'closingfthe gap between said 1U plate controlling the height of theinlet back and side plates and said other of the openin means or closingoi a portion of y first mentioned plates..v

5said in et opening comprising top and bot- In testimony whereof Ilhereto aflix my tom plates adapted to engage res ectively signature.

I v the top plate and the aron of' t e inlet,

back and' side plates rigi y-connected with RALPH E. HEISEL.

